Island



(No Model.)

N. MOKINNON.

BLIND HINGE.

V Patented Dec. 11,1894;

W. I 1'9 7 I 77/ E5555: 7a F f h. a

hes/a UNITED STAT S PATENT ()FFICF,

NEIL MCKINNON, OF NEWPORT, RHODE ISLAND.

BLIND-HINGE.

SPECIFICATION forming part of Letters Patent No. 530,709, dated December 11, 1894.

Application filed June 6,1894- Serial No. 513.617. (No model.)

To all whom it may concern.-

Be it known that I, NEIL MCKINNON, of.

Newport, in the county of Newport, State of Rhode Island, have invented certainnew and useful Improvements in Blind -Hinges, of which the following is a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertainsto make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is an elevation of the inner face of the blind, the body of the blind and wall being represented as broken away and the fas toning device shown as unlocked; Fig. 2, a like view of the opposite side showing the blind closed and locked; Fig. 3, a vertical section taken on line, as, x, in Fig. 1; Fig. 4, a horizontal section taken on line, y, y, in Fig. 2; Fig. 5, an end elevation looking from the left in Fig. 2; Fig. 6, a plan view showing an alternative form of lock; Fig. 7, a view of the hinge-leaf designed for use at the top of the 2 5 blind; Figs. 8, 9, and 10, top plan viewsshowing the difierent forms of pintle.

Like letters and figures of reference indicate corresponding parts in the different figures of the drawings.

0 My invention relates especially to a looking blind-hinge; and it consists in certain novel features hereinafter fully set forth and claimed, the object being to produce a simple,

cheap and effective device of this character. 3 5 The nature and operation of the improvement will be readily understood by all conversant with such matters from the following explanation.

In the drawings, A represents the body of 0 the blind and B the wall. The pintle leaf, 0, is secured to the wall by screws, b, in the usual manner. The pintle,f,is vertical and may be set into the arm or eye, g, of the leaf, 0, so as to be interchangeable if desired. The 5 upper end of the pintle may be squared, as f in Fig. 10,01 grooved vertically, as at f and f in Figs..8 and 9 respectively.

The blind-leaf, D, consists of an angle-iron having two parallel arms, j, k, which will embrace the stile of the blind on opposite sides and may be secured by nails or screws forming a bearing surface which preventsthe blind from readily splitting.

The leaf, D, is provided with an eye or socket, m, which will receive the pintle, f, and rotate thereon. Said socket has an interiorly arranged annular groove, p, best shown in Fig. 3, traversed vertically bya groove, q. A pin, 1', on the pintle works in said annular groove and prevents the blind from being withdrawn until said pin registers with the vertical groove, g, which is designed to be in such position that the blind can only be removed when open.

Fitted to rotate in and passing through the lower sash-bar of the blind, A, from the inner side there is a key, t, provided with a thumbpiece, 1;. On the outer end of said keya locking lever, w, is secured and has one end split atz, to astride a guide-lug on the leaf, D. This looking lever has a head, 15, at its opposite end having a socket, 16, disposed directly over and adapted to receive the squared or grooved upper end of the pintle so that when engaged the blind will be locked against rotation thereon.

' Instead of passing the key, t, through the blind it may be arranged, as at t in Fig. 6, and the lever, w have acurved shank bent around the blind,its head, 19, being socketed to receive the pintle as before.

In Fig. 7 the hinge leaf, D for the top of the blind is shown. This has. a short arm, h,

and long arm, 11, witha pintle-socket, 25., The

arm, h, is of sufficient length to aiford aboaring on the side of the stile to prevent splitting.

When it is desired to open the blind the key, 6, is rotated disengaging the lever, w, from the pintle. When the blind is opened to the desired degree the locking lever can be dropped again engaging the pintle and securing the blind in this assumed position. Any form of pintle can be used so that the blind can be locked at anydesired angle.

When it is desired to unship the blind it is rotated until the stud, 1', on the pintle registers with the vertical groove, q, in the pintle socket when the leaf, D, may be readily disengaged.

One arm as, j, of the leaf, D, of the hinge may be broadened so as to form a bearing for the key, 15, instead of having said key work directly in the blind frame-bar.

5 Having thus explained my invention, what I claim is- In a blind hinge the member, 0, provided with a pintle, f, having the squared or grooved upper end in combination with the leaf, D,

[0 provided with arms, j, k, and pintle socket, m, the lever, w, pivoted to swing vertically on the blind and provided with the head 15, for engaging the upper end of the pintle and a key adapted to be operated from the inner face of the blind and actuating said lever, snb- I 5 stantially as described.

hi NEIL MCKINNON.

mark

Witnesses:

HERBERT E. NASON, SADIE A. HARVEY. 

